(19)
(11) EP 1 722 093 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
13.01.2010 Bulletin 2010/02

(43) Date of publication A2:
15.11.2006 Bulletin 2006/46

(21) Application number: 06003190.3

(22) Date of filing: 16.02.2006
(51) International Patent Classification (IPC): 
F02M 25/08(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 09.05.2005 US 124696

(71) Applicant: CHRYSLER LLC
Auburn Hills MI 48326 (US)

(72) Inventor:
  • Hurley, Darrin W.
    Flat Rock MI 48134 (US)

(74) Representative: Ebner von Eschenbach, Jennifer et al
Ladas & Parry LLP Dachauerstrasse 37
80335 München
80335 München (DE)

   


(54) Evaporative system integrity monitor


(57) An evaporative emission control and leak detection system for a vehicle is provided. The system includes an integrated valve module in fluid communication with a carbon canister and atmosphere. The module is arranged to vent the system when exposed to predetermined high negative and positive pressure conditions. The module includes a switch mechanism having a spring biasing member arranged to bias the switch mechanism to an open position. The switch is operable to indicate when the system is in a low negative pressure condition. The switch also includes a negative pressure valve coupled to a fluid passage between the canister, the atmosphere and the switch, and a positive pressure valve coupled to a fluid passage between the canister and atmosphere that bypasses the negative pressure valve and switch. The negative and positive pressure valves are positioned in a stacked arrangement in the integrated valve module.







Search report